11-16 Duramax LML Fleece CP4 to CP3 Install Kit Cooling This can cause excessive pressure

This can cause excessive pressure to build in the cooling system

and two 1/8 inch NPT fuel accessory ports

(2) - Oil Level Indicator Tube Seal

(2) Sealing Washers

Better control of your truck and load

11-16 Duramax LML Fleece CP4 to CP3 Install Kit Cooling This can cause excessive pressureWhy convert your LML's Fuel System from a CP4 to a CP3 The stock CP4 is only capable of supporting up to ~500rwhp. A stock CP3 is capable of supporting 600+ rwhp in conjuction with the piezoelectric injectors. The CP4 was introduced as a cost reduction to the LML platform since a smaller amount of fuel is required when running the more efficient piezoelectric injectors. Since its introduction it has proven to be less reliable and less capable than the